Terex Finlay showcased the latest addition to their 8-Series line up of heavy duty screeners, the ‘883+ triple shaft' at Bauma 2019. This new model has been developed specifically to work in a variety of dry and difficult sticky applications including quarry, mining, sand and gravel, construction and demolition debris and recycling applications.
Keestrack optimizes electric drive technology
From vision to mission
Keestrack offers today the most versatile range of hybrid and plug-in solutions in mobile processing technology for quarrying and recycling applications. This applies to the complete product range, from screening plants and stockpile conveyors to mobile track-mounted crushing solutions of all relevant technologies and for all production capacities.
Recognize and use benefits
As one of the first manufacturers Keestrack recognized the huge saving potentials and operational advantages of electric drives for highly flexible track-mounted mobile processing solutions with transport weights up to 60 tons. In 2012 the first diesel-electric classifier was introduced, followed in 2013 by the first hybrid scalper and the first hybrid Keestrack crushers with electrified conveyors, followed by electric crusher drives. In these plants, powerful generators ensure low engine speed resulting in fuel-saving operations of the onboard diesels. Downstream screening plants or stockpile conveyors can now be fed via external plug-out supplies, which further improves the total fuel consumption of production trains.
With the plug-in option, to connect to the mains, the Keestrack hybrid "e"-versions further enlarged their operating cost advantage over conventional diesel-hydraulic systems. Installed electrical pumps for essential hydraulic consumers (lifting cylinders, track drive, etc.) allow the full-electric operation of today's "e"-versions. Compared to conventional diesel-hydraulic systems, energy costs can be reduced up to 80% - the noise levels during emission-free plug-in operation by about 30% according to Keestrack. Replacing hydraulic drives on conveyors, screen shafts, compressors or water pumps by electric motors also avoid long oil piping with leak-prone hose connections. Thermal problems in operations under extreme conditions are eliminated. With significantly lower oil quantities and extended change intervals the smaller hydraulic systems of Keestrack's "e"-versions not only save the environment but also real money.
In full-electric operation, this also applies to lubricants, filters and other wear parts of the onboard diesel. Less engine hours mean less maintenance and downtime, which has a positive impact on total cost of ownership, as well as the higher value retention. And finally: engine problems on a diesel-hydraulic crusher can stop the whole production or job-site, with a plug-in hybrid machine, a total breakdown can be relatively easy avoided by providing an additional external gen-set to ensure the finalization of the project.
Thanks to their on-board diesels, Keestrack's modern "e"-versions remain as flexible and highly mobile as conventional technology without having to add a lot of additional transport weight, ± 1000 kg compared to the respective diesel-hydraulic version. By using high-quality steels and the weight-optimized design, Keestrack hybrids still undercut significantly the transport weights of most diesel-hydraulic competitor models of the same capacity. Even the larger hybrid plants can be transported in one piece, without dismantling. This also contributes to short set-up times. The full integration of all electrical system functions are controlled by the intelligent Keestrack plant control. This includes numerous automated routines (eg. sequential start/stop) and the comprehensive monitoring, with bi-directional transmission of machine and production data, via the satellite-based Keestrack-er system.
Today, Keestrack already offers 80% of its total 22 models in six series as diesel-electric hybrid variants, 75% of them as fully electric plug-in systems. Depending on technology, type of application and production capacities, customer demand is quite different, but clearly related to the specific additional investment for the hybrid or all-electric system options. According to Keestrack there is a 10-15 % higher initial investment for stackers and screeners and 15-20 % for large mobile crushers. The faster this additional investment can be amortized the more attractive the "e"-option becomes. This is for example the case for quasi-stationary operations via mains on a recycling yard/quarry or more generally for large production schemes with energy-intensive machines. Accordingly, the hybrid portion of sold Keestrack models rises in close analogy to machine size and capacity and achieves for example for large classifiers around 40%, while the giant 500 t/h impact crusher R6 is sold to almost 90 % "hybrid" ("rotor-by-diesel" + full-electric versions).
During recent years, Keestrack followed consistently this trend in the development of its product range. Across all crushing technologies and machine sizes existing mobile crusher models have been presented in new "electrified generations" (eg. jaw crusher B3, impact crusher R5). Completely new models or series have even been developed on a specific diesel-electric plug-in design base (eg. R3, B4 + B7, H4 + H6). Some of these models are only available as "e"-version, as the practical advantages and the high gains in cost efficiency of their diesel-electric/plug-in drives are so successful, so there is no reason to provide these in conventional diesel-hydraulic drives.
Innovation makes you innovative
The consistent development of electric drive concepts is far more than a mere modification. This is proved by the numerous innovations introduced by Keestrack during this transition. Among others, these include specific plant componentry, such as the company's own series of compact wind sifters or the new optionally electric driven neodymium overbelt magnets. Despite a much higher separation capacity their weight is considerably lower, even up to 400 kg less than conventional ferrite magnets and this significantly reduces the transport weight of the diesel-electric machines.
Another interesting innovation is the "Drop-Off" power-supply module Keestrack is offering on its new all large plug-in plants. On-board diesel and generator are combined in a detachable unit, which can be positioned remotely from the machine, far from dust and vibrations during diesel-electric operation and easy to be accessed for control and maintenance. Since the main control with energy management and all electric drives are installed on the chassis, the drop-off modules can be completely dismantled and stored during plug-in operations via mains.
The most advanced and futuristic result of its sophisticated "e"-technology is the new track-mounted stacker S5e "Solar". It is probably the first directly solar-powered mobile processing plant worldwide. Photovoltaic panels literally span like a sun sail over the 23-meter-long conveyor belt. With max. 9 kWh they feed the system battery with a capacity of 23 kWh, installed on the chassis. The conveyor belt (22 kW) and the tracks (2 x 15 kW) are directly electric-driven, an electric pump unit (2 x 15 kW) supplies the hydraulic lifting cylinders. If bad weather causes an insufficient photovoltaic power supply or intensive continuous operation exceeds the solar recharging capacities, the system can be powered or recharged via available external sources, such as upstream diesel-electric crushers and screens, or via mains plug-in.
Keestrack at Bauma 2019: Outdoor area North, Stand: FN1017 / 1
More from C&D Recycling
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CDE has launched the Combo™ in a move set to revolutionize the wet processing industry.
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Terex Washing Systems (TWS) will present live washing demos of their game-changing AggWash 60 during bauma 2019. This showcase, in conjunction with their German distributors Kolsch and Christophel, is being hosted at Mittermeier (Kolsch customer site), located next to Hall FN 1024 / 1, April 8-14, 2019.
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McCloskey to debut latest crushers, screens, stackers and washing plants on the world stage at bauma 2019
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Powerscreen is one of the world's leading providers of mobile crushing, screening and conveying equipment. Official distributors, Powerscreen of Canada will exhibit at the National Heavy Equipment Show in Toronto, from March 28-29th, 2019. Exhibiting at booth number 5004, experts will be on hand to talk crushing and screening and visitors will have the opportunity to get up close to a Powerscreen Chieftain 2200 screen.
Michael Gross, Zanker Recycling, San Jose CA, and Clarence "Jay" Giltz, Eagle Crusher, will be inducted into the C&D Hall of Fame, the industry's highest honor, at the Construction & Demolition Recycling Association's C&D World 2019, upcoming this March 10-12 in New York City.
2018 marked the most successful year to date for RUBBLE MASTER. With record sales and an export quota of 97% RUBBLE MASTER continues to hold their status as a market leader in Compact Crushing and Screening. The company says its continued success comes from higher product demand, healthy expansion in global markets, and new screening products.
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Municipalities are responsible for the care and maintenance of vast amounts of roadway, from alleys to highways. When those roads are repaired or replaced, there's the potential to generate a significant amount of aggregate material - concrete and asphalt removed from the old surface that must be dealt with.
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Cat multi-processors feature quick-change jaws, greater cutting/crushing forces, increased speed, durable design
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Metso is introducing new higher capacity models to its popular wheel-mounted Metso NW Rapid series. In addition to a bigger jaw crusher model, the NW Rapid units are now also available with a variety of robust cone crushers, including the first model with the MX crusher. Easily transportable using standard prime movers, over a thousand NW Rapid models have already been sold into aggregates and C&D recycling applications.
In 2017, McLanahan Corporation began a partnership with Anaconda Equipment of Northern Ireland to distribute and sell Anaconda's line of mobile track equipment. As the relationship between the two companies progressed, it became clear that their values and business styles were closely aligned. Today, the two companies are proud to announce that Anaconda Equipment will officially join McLanahan Corporation's family of companies upon legal closing within the next 30 to 60 days.
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EvoQuip made an impact on the US market with a successful Open Event on November 8th 2018. Over 100 dealers and new and existing customers made the trip to Cave City, Kentucky to see live working demonstrations of the compact crushing and screening range.
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Terex MPS welcomed over 80 distributors to their highly successful Americas Distributor Conference and Equipment Expo in Oklahoma City from October 15 to 18 2018.
Superior Industries Inc., a U.S. based manufacturer and global supplier of bulk material processing and handling systems, says it's ready to debut two new tracked conveyor models. Joining the manufacturer's top-selling line of portable conveying solutions are a 75-foot (23m) tracked stacker and an 8-by-16-foot (2.4 x 4.9m) tracked feed hopper.
Delegates from all over the world joined together at the inaugural Circular Driven Economy Symposium in London on the 18th - 19th September, to learn more about the opportunities in recovered construction and demolition waste material (C&D waste). Speakers from research bodies like SINTEF, academic institutions like Queen's University Belfast, construction and manufacturing firms like LafargeHolcim and Mapei, and the European Commission all provided plenty for delegates to think about.
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